West Coast #4 ridden by Mike Smith won the $1,000,000 Grade I Pennsylvania Derby at Parx Racing in Bensalem, Pennsylvania on September 23, 2017 Bill Denver/EQUI-PHOTO

West Coast #4 ridden by Mike Smith won the $1,000,000 Grade I Pennsylvania Derby at Parx Racing in Bensalem, Pennsylvania on September 23, 2017 Joe Labozzetta/EQUI-PHOTO

West Coast with Mike Smith up wins the Pennsylvania Derby(G.I) at Parx on September 23rd, 2017 Adrianna Lynch

West Coast with Mike Smith up wins the Pennsylvania Derby(G.I) at Parx on September 23rd, 2017 Adrianna Lynch

West Coast with Mike Smith up wins the Pennsylvania Derby(G.I) at Parx on September 23rd, 2017 Adrianna Lynch

Bob Baffert Adrianna Lynch

West Coast with Mike Smith up wins the Pennsylvania Derby(G.I) at Parx on September 23rd, 2017 Adrianna Lynch

West Coast with Mike Smith up wins the Pennsylvania Derby(G.I) at Parx on September 23rd, 2017 Adrianna Lynch

Mike Smith in the paddock prior to winning the 38th Running of the Pennsylvania Derby (GI) at Parx on September 23, 2017 aboard West Coast Chad B. Harmon

West Coast saddle cloth in the paddock prior to winning the 38th Running of the Pennsylvania Derby (GI) at Parx on September 23, 2017 Chad B. Harmon

West Coast with Mike Smith win the 38th Running of the Pennsylvania Derby (GI) at Parx on September 23, 2017 Chad B. Harmon

West Coast with Mike Smith win the 38th Running of the Pennsylvania Derby (GI) at Parx on September 23, 2017 Chad B. Harmon

West Coast with Mike Smith win the 38th Running of the Pennsylvania Derby (GI) at Parx on September 23, 2017 Chad B. Harmon

West Coast with Mike Smith win the 38th Running of the Pennsylvania Derby (G1) at Parx on September 23, 2017 Chad B. Harmon

Jockey Mike Smith holds up the Pennsylvania Derby Trophy with Owners Mary and Gary West (L) and Trainer Bob Baffert after West Coast won the $1,000,000 Grade I Pennsylvania Derby at Parx Racing in Bensalem, Pennsylvania on September 23, 2017 Bill Denver/EQUI-PHOTO

Bob Baffert and Gary West walk to the winner's circle after West Coast #4 ridden by Mike Smith won $1,000,000 Grade I Pennsylvania Derby at Parx Racing in Bensalem, Pennsylvania on September 23, 2017. Joe Labozzetta/EQUI-PHOTO

West Coast #4 ridden by Mike Smith won the $1,000,000 Grade I Pennsylvania Derby at Parx Racing in Bensalem, Pennsylvania on September 23, 2017. Taylor Ejdys/EQUI-PHOTO

West Coast with Mike Smith win the 38th Running of the Pennsylvania Derby (GI) at Parx on September 23, 2017 Chad B. Harmon

West Coast with Mike Smith win the 38th Running of the Pennsylvania Derby (GI) at Parx on September 23, 2017 Chad B. Harmon

Traver's winner West Coast with Yeris Ortega up at Parx Racing in Bensalem, Pennsylvania on September 22, 2017. Taylor Ejdys/EQUI-PHOTO

Exercise rider Yeris Ortega receives last minute instructions from trainer Bob Baffert before heading onto the track with West Coast at Parx Racing in Bensalem, Pennsylvania on September 22, 2017. Taylor Ejdys/EQUI-PHOTO

West Coast - Parx Racing - September 21, 2017 Taylor Ejdys/EQUI-PHOTO

West Coast (left) ridden by Yeris Ortega is ponied back to the barn by Franklin De Jesus after having his first look at the track at Parx Racing in Bensalem, Pennsylvania on September 21, 2017 Taylor Ejdys/EQUI-PHOTO

West Coast is led off the van at Parx Racing in Bensalem, Pennsylvania on September 20, 2017 Taylor Ejdys/EQUI-PHOTO

West Coast wins the 2017 Travers Coglianese Photos

West Coast wins the 2017 Travers Coglianese Photos

West Coast wins the 2017 Travers Coglianese Photos

West Coast wins the 2017 Travers Coglianese Photos

West Coast wins the 2017 Travers Coglianese Photos

West Coast wins the 2017 Travers Coglianese Photos

West Coast wins the 2017 Travers Coglianese Photos

West Coast wins the 2017 Travers Coglianese Photos

West Coast wins the 2017 Travers Coglianese Photos

West Coast wins the 2017 Travers - First Time Around Coglianese Photos/Chelsea Durand

West Coast wins the 2017 Travers Coglianese Photos/Lauren King

West Coast wins the 2017 Travers Coglianese Photos/Lauren King

West Coast wins the 2017 Travers Coglianese Photos/Jamie Coulter

West Coast wins the 2017 Travers Coglianese Photos/Arianna Spadoni

West Coast ridden by jockey Mike Smith lead wire to wire as he passes the clubhouse for the first time on the way to the win in the 148th running of The Travers Stakes at the Saratoga Race Course in Saratoga Springs, N.Y. Skip Dickstein

Undefeated Magnum Moon, winner of the $1 million Arkansas Derby (G1) at Oaklawn Park, moved up to second; and My Boy Jack, winner of the $200,000 Stonestreet Lexington Stakes at Keeneland, jumped to 10th in the latest NTRA top 3-year-old poll.

On a banner night for the home team in Godolphin blue, Thunder Snow (IRE) provided the exclamation point March 31 with a clear victory in the $10 million Dubai World Cup Sponsored by Emirates Airline (G1) at Meydan.